GeoEye-1
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GeoEye-1 is a high-resolution Earth observation satellite owned by Maxar Technologies (formerly DigitalGlobe), launched in September 2008. The satellite was acquired in the 2013 purchase of GeoEye.
History
On 1 December 2004, General Dynamics C4 Systems announced it had been awarded a contract worth approximately Template:US$ to build the OrbView-5 satellite.[1] Its sensor is designed by the ITT Exelis.
The satellite, now known as GeoEye-1, was originally scheduled for launch in April 2008 but lost its 30-day launch slot to a U.S. government mission which had itself been delayed. It was rescheduled for launch 22 August 2008 from Vandenberg Air Force Base aboard a Delta II launch vehicle.[2] The launch was postponed to 4 September 2008, due to unavailability of the Big Crow telemetry-relay aircraft.[3][4] It was delayed again to 6 September because Hurricane Hanna interfered with its launch crews.
The launch took place successfully on 6 September 2008 at 18:50:57 UTC. The GeoEye-1 satellite separated successfully from its Delta II launch vehicle at 19:49 UTC, 58 minutes and 56 seconds after launch.[5]
Specifications and operation
GeoEye-1 provides Script error: No such module "convert". panchromatic and Script error: No such module "convert". multispectral imagery at nadir in Script error: No such module "convert". swaths. The spacecraft is in a Sun-synchronous orbit at an altitude of Script error: No such module "convert". and an inclination of 98 degrees, with a 10:30 a.m. equator crossing time.[6][7][8] GeoEye-1 can image up to 60 degrees off nadir. It is operated out of Dulles, Virginia.[9]
At the time of its launch, GeoEye-1 was the world's highest resolution commercial Earth-imaging satellite.[10] GeoEye-1 was manufactured in Gilbert, Arizona, by General Dynamics and the first image was returned on 7 October of Kutztown University of Pennsylvania in Kutztown, Pennsylvania.[11]
Google, which had its logo on the side of the rocket, has exclusive online mapping use of its data. While GeoEye-1 is capable of imagery with details the size of Script error: No such module "convert"., that resolution was only available to the U.S. government. Google has access to details of Script error: No such module "convert".. Prior maximum commercial imagery was Script error: No such module "convert"..[12]
The National Geospatial-Intelligence Agency and Google paid a combined Template:US$ for the satellite and upgrades to GeoEye's four ground stations.[13]
2009 anomaly
In December 2009 GeoEye announced it had suspended imagery collections by GeoEye-1 for a few days, citing an irregularity in the downlink antenna. "The irregularity appears to limit the range of movement of GeoEye-1's downlink antenna, which may in turn affect GeoEye-1's ability to image and downlink simultaneously," GeoEye said at a press conference.[14] However, the satellite continued with normal operations shortly thereafter, though with diminished simultaneous imaging-and-downlink capability for non-U.S. clients.[15]
See also
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References
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External links
- GeoEye-1 at Digitalglobe.com
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